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Physics
09.02.2020 05:04
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A student releases a marble from the top of a ramp and the marble increases speed

A student releases a marble from the top of a ramp and the marble increases speed steadily and travels 190 cm in 4.10 s what's the marbles final speed
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morganashley6795
morganashley6795
4,6(56 marks)

The value is  v = 92.68 \ cm/s

Explanation:

From the question we are told that

     The distance traveled is d = 190 \ cm = 1.9 \ m

     The  time taken is  t = 4.10 \ s

Generally from kinematic equation we have that

      s = ut + \frac{1}{2} at^2

Here u is the initial velocity of the marble and the value is u = 0 \ m/s

So

      1.90 = 0* t + \frac{1}{2} a (4.10 )^2

=>   1.90 = 0* t + \frac{1}{2} a (4.10 )^2

=>    a = 0.226 \ m/s^2

Generally from kinematic equations we have that

     v = u + at

=>   v = 0 +0.226 * 4.10

=>   v =0.9268 \ m/s

Converting to  cm/s

=>    v =0.9268 * 100

=>    v = 92.68 \ cm/s

aaburto1515
aaburto1515
4,4(87 marks)
The answer is D Solid Sphere

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